Cita APA (7th ed.)
Slavin, S. L. (1991). Economics (2nd ed.). Irwin.
Cita Chicago (17th ed.)
Slavin, Stephen L. Economics. 2nd ed. Burr Ridge, Ill.: Irwin, 1991.
Cita MLA (9th ed.)
Slavin, Stephen L. Economics. 2nd ed. Irwin, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.